The generation of electricity is most efficiently carried when thermal energy and carbon dioxide are captured and reused in the process. Trigeneration facilities provide high voltage electricity, heating and cooling, and hot potable water. Quadgeneration does the same, but also captures CO2 in the process for industrial reuse or sequestration. Increasingly smaller generation alternatives are becoming available, but pose issues with respect to thermal loss. The choice depends on the degree to which thermal energy can be employed by the user. Closet sized quadgeneration units installed on a district level (600-800) currently appear to be the most viable option assuming the modest consumption enabled by the community design.